Regression Check

EXECUTE NOW

Mode: $ARGUMENTS

Parse:

• tests — run pytest suite only
• baseline — re-run baseline scenario and compare metrics
• full or empty — run both tests and baseline comparison

Step 1: Run tests

python -m pytest tests/ -v --tb=short

Report pass/fail count. If any failures, list them.

Step 2: Run baseline scenario

python -m swarm run scenarios/baseline.yaml --seed 42 --epochs 10 --steps 10

Step 3: Compare against last known-good

Read the most recent baseline run from memory at .letta/memory/runs/latest.md.

If a previous baseline exists, compare:

• Welfare: delta and percentage change
• Toxicity: delta
• Acceptance rate: delta
• Quality gap: delta

Flag any metric that changed by more than 10% as a potential regression.

Step 4: Report

## Regression Check

### Tests
- {passed}/{total} passed
- Failures: {list or "none"}

### Baseline comparison
| Metric | Previous | Current | Delta | Status |
|--------|----------|---------|-------|--------|
| Welfare | ... | ... | ... | OK/DRIFT |
| Toxicity | ... | ... | ... | OK/DRIFT |

### Verdict
{CLEAN — no regressions detected}
{REGRESSED — {details}}